If existing inductive chargers are to be modified to make it solar powered, what adjustments should I do to the circuit?

I've been working on creating a solar powered inductive charger. I've only just started in my electronics class, so I don't quite know what to do about it. I've planned to simply modify the existing circuit designs of inductive chargers to make it solar powered, however I do not quite know where to start nor which parts to modify.

Alternatively you could charge a battery with a smaller solar panel and then run the inductive charger off of the battery. Not as efficient but easier to get a constant charge from the inductive charger.

Thanks frollard and bwrussell.I've thought about the long charging time already.But what if the solar panel would only be the second power source? What if the plugs would still be maintained yet the solar panel would be attached? Will that thing work?

It won't let me reply but yes, it would be possible to keep the standard plug to the inductive charger. Just make it so the solar panel output is in the opposite (male/female) plug of the same type as the inductive charger. That way you can plug the inductive charger to either it's normal power source or the solar system.